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Sonic The Hedgehog
索尼克：The Hedgehog
Sonic The Hedgehog stands as a defining action title on the Sega Master System. With polished gameplay mechanics and memorable level design, this classic delivers an experience that has stood the test of time. A must-play for retro gaming enthusiasts.
- Developer
- Ancient
- Platform
- Master System
- Genre
- Action
- Players
- 1P
- Rating
- 4.5 / 5 (4.5K)
- Last updated
Sonic The Hedgehog Controls — Master System Keyboard Keys
Default keyboard bindings for Sonic The Hedgehog on our in-browser Master System emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | 1 | Primary action (jump / confirm) |
| Z | 2 | Secondary action (attack / cancel) |
| Enter | Pause | Start / Pause |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Sonic The Hedgehog Longplay & Gameplay Videos
Watch a full playthrough of Sonic The Hedgehog on Master System before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Sonic The Hedgehog" Master System longplay
Sonic The Hedgehog Cheat Codes
30 community-curated cheats for Sonic The Hedgehog. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
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Infinite Rings
00D2-AA98 -
Infinite Lives
00D2-4609004-64A-3BE -
Be Turbo Sonic
00D4-1105 -
Level Modifier
00D2-3EXX00D2-3E00 -
Infinite Time
00D2-CF007EA-18C-3B7 -
Level Select
00D2-3E00 -
Invincibility
00D2-0901 -
Have All Chaos Emeralds
00D2-7F06 -
Invulnerability
C9B-9D8-082 -
Moon Jump
18B-65B-6EA -
Infinite Time Underwater
000-18A-6E600D2-9C00 -
Infninite Time
001-B7D-5DD+7EA-24C-3B7
Show 18 more cheats Show fewer
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Don't Lose Rings When Hit
3A6-45C-2A2 -
Rings Worth ??
02E-43B-E6E -
Infinite Continues
00D2-8409 -
Don't Die When Hit With No Rings
186-16C-6EA -
Start with ?? Lives, instead of 3
05C-4FE-E66 -
Start on Green Hill Zone, Act 2
00C-5DE-5D4+01C-59E-91A -
Start on Green Hill Zone, Act 3
00C-5DE-5D4+02C-59E-91A -
Start on Bridge Zone, Act 1
00C-5DE-5D4+03C-59E-91A -
Start on Bridge Zone, Act 2
00C-5DE-5D4+04C-59E-91A -
Start on Bridge Zone, Act 3
00C-5DE-5D4+05C-59E-91A -
Start on Jungle Zone, Act 1
00C-5DE-5D4+06C-59E-91A -
Start on Jungle Zone, Act 2
00C-5DE-5D4+07C-59E-91A -
Start on Jungle Zone, Act 3
00C-5DE-5D4+08C-59E-91A -
Start on Labyrinth Zone Act 1
00C-5DE-5D4+09C-59E-91A -
Start on Labyrinth Zone Act 2
00C-5DE-5D4+0AC-59E-91A -
Start on Labyrinth Zone Act 3
00C-5DE-5D4+0BC-59E-91A -
Start on Scrap Brain Zone, Act 1
00C-5DE-5D4+0CC-59E-91A -
Start on Scrap Brain Zone, Act 2
00C-5DE-5D4+0DC-59E-91A
External references
Frequently Asked Questions
Who developed Sonic The Hedgehog?
Sonic The Hedgehog was developed by Ancient, available to play in your browser on RetroGameSpace.
How many players does Sonic The Hedgehog support?
Sonic The Hedgehog is a single-player Action game for the Master System.
What type of game is Sonic The Hedgehog?
Sonic The Hedgehog is a Action game for the Master System, playable instantly in your browser — no downloads, no installs.
How can I play Sonic The Hedgehog for free?
Open this page and click "Play Now" — Sonic The Hedgehog runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Sonic The Hedgehog in the browser?
No. Sonic The Hedgehog streams from a public archive into a browser-side Master System emulator. Nothing is installed on your computer.
Can I save my progress in Sonic The Hedgehog?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Master System cartridge supported.
Does Sonic The Hedgehog work on mobile devices?
Yes — the Master System emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Sonic The Hedgehog this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Sonic The Hedgehog. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
